Parallax Barrier Method (IMAGE) Optica Caption Actual experimental results demonstrate the promise of a glasses-free 3-D theater experience. Two cars, one red and one blue, are projected onto a screen through a parallax barrier. As the light shines back through the polarizer, two offset images are created, which creates the visual cues that the brain interprets as depth. Credit <i>Optics Express</i> Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.